CN110099341A - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN110099341A CN110099341A CN201910487407.4A CN201910487407A CN110099341A CN 110099341 A CN110099341 A CN 110099341A CN 201910487407 A CN201910487407 A CN 201910487407A CN 110099341 A CN110099341 A CN 110099341A
- Authority
- CN
- China
- Prior art keywords
- annular
- connect
- fixed part
- extension
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Abstract
The present invention provides loudspeakers, including frame, vibrational system, magnetic circuit system, frame includes the top cover for accommodating the bottom frame of magnetic circuit system He being fixed on magnetic circuit system, vibrational system includes first annular vibrating diaphragm, second annular diaphragm, annular top dome, voice coil and skeleton, the outside of first annular vibrating diaphragm is connect with bottom frame, the inside of first annular vibrating diaphragm is connect with the outside of annular top dome, the outside of second annular diaphragm is connect with the inside of annular top dome, the inside of second annular diaphragm is connect with top cover, one end of skeleton is connect with voice coil, the other end is connect with annular top dome.Loudspeaker provided by the invention uses double diaphragm structure by setting vibrational system, and vibrational system vibration can be made more to balance, and effectively reduces because of the uneven noise generated of vibration, effectively promotion sound quality；Furthermore first annular vibrating diaphragm, the second annular diaphragm, annular top dome, bottom frame and top cover can integrally be enclosed the space of a sealing, guarantee leakproofness.
Description
[technical field]
The present invention relates to acoustics design technical field more particularly to a kind of loudspeakers.
[background technique]
With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices
Among, mobile phone is undoubtedly the most common mobile terminal device.Currently, cell-phone function is varied, one of them is high-quality
Music function, and the loudspeaker in mobile phone be realize this high-quality function one of necessary condition.
Existing loudspeaker includes frame, the vibrational system being mounted in frame and magnetic circuit system, and vibrational system includes vibration
Film, annular top dome, skeleton and voice coil, annular top dome are connect with vibrating diaphragm, and voice coil passes through setting skeleton and ring on its direction of vibration
Shape top dome is connected to drive diaphragm oscillations sounding.The structure of existing loudspeaker can frequently result in vibration using the design method of single vibrating diaphragm
Dynamic system vibration is uneven, and there are more noises.
It is therefore desirable to study the novel loudspeaker of one kind to solve the above problems.
[summary of the invention]
The purpose of the present invention is to provide a kind of loudspeakers, the vibration of vibrational system can be made more to balance, effectively
It reduces because of the uneven noise generated of vibration, effectively promotion sound quality.
The purpose of the present invention adopts the following technical scheme that realization:
A kind of loudspeaker, including vibrational system, magnetic circuit system and use for driving the vibrational system vibration sounding
In the frame installed for the vibrational system and the magnetic circuit system, the frame includes the bottom for accommodating the magnetic circuit system
Frame and the top cover being fixed on the magnetic circuit system, the vibrational system includes first annular vibrating diaphragm, the second annular diaphragm, annular
The outside of first annular vibrating diaphragm described in top dome, voice coil and skeleton is connect with the bottom frame, the inside of the first annular vibrating diaphragm
It is connect with the outside of the annular top dome, the outside of second annular diaphragm is connect with the inside of the annular top dome, described
It is connected with the top cover on the inside of second annular diaphragm, one end of the skeleton connect with the voice coil, the other end and the ring
The connection of shape top dome.
As an improvement mode, the magnetic circuit system is located at the inside of second annular diaphragm.
As an improvement mode, the magnetic circuit system includes being installed on magnetic conductive board among the bottom frame, being set to institute
State the main magnet steel among magnetic conductive board, four be set on the magnetic conductive board and the secondary magnet steel around the main magnet steel setting, attaching
It is attached at the separate of four secondary magnet steel respectively in the main pole core of the separate magnetic conductive board side of the main magnet steel and four
The consequent pole core of the magnetic conductive board side, the main magnet steel and the secondary magnet steel interval setting, the voice coil is movable to be sheathed on institute
It states outside main magnet steel.
As an improvement mode, the bottom frame includes bottom plate and the first side plate for being convexly equipped in the bottom edge, described
The outside of first annular vibrating diaphragm is connect with first side plate, and the centre of the bottom plate offers through-hole, and the magnetic conductive board is embedded
In the through-hole.
As an improvement mode, the top cover includes top plate, the convex block being convexly equipped among the top plate and is convexly equipped in institute
The second side plate of ceiling edge is stated, the side far from the top plate of the convex block is connect with the magnetic circuit system, and described second
The inside of annular diaphragm is connect with second side plate, and the voice coil is movable to be sheathed on outside the convex block.
As an improvement mode, there are two the skeleton is set, two skeletons are two opposite respectively from the voice coil
Side extends the connection annular top dome.
As an improvement mode, the side towards second side plate of each skeleton is recessed with for avoiding
State the evacuation notch of the second side plate.
As an improvement mode, each skeleton includes the first extension, the second extension and third extension,
First extension is arranged at intervals at the side of the voice coil, and second extension and the third extension are respectively from institute
State the lateral wall that the both ends of the first extension connect the voice coil along the direction of the direction of vibration of the vertical voice coil, described first
The extension connection annular top dome, the evacuation notch are set to second extension and the third extension.
As an improvement mode, the first annular vibrating diaphragm includes the first ring, on the inside of first ring
Outside first fixed part and the second fixed part on the outside of first ring, first fixed part and the annular top dome
Side connection, second fixed part are connect with the bottom frame；Second annular diaphragm includes the second ring, is located at described second
Third fixed part on the inside of ring and the 4th fixed part on the outside of second ring, the third fixed part and the top
Lid connection, the 4th fixed part are connect with the inside of the annular top dome.
As an improvement mode, first ring is that both ends are fixed from first fixed part and described second respectively
Arcuate structure of the portion towards the direction bending protrusion setting far from the bottom frame；Second ring is both ends respectively from the third
The arcuate structure that fixed part and the 4th fixed part are arranged towards the direction bending protrusion far from the bottom frame.
Embodiment of the present invention includes first annular vibrating diaphragm and the by the way that vibrational system is arranged in terms of existing technologies
The double diaphragm structure of second ring vibrating diaphragm, can make the vibration of vibrational system more balance, and effectively reduce and produce because vibration is uneven
Raw noise, effectively promotion sound quality；In addition, by above-mentioned connection type, first annular vibrating diaphragm, the second annular diaphragm, annular
Top dome, bottom frame and top cover can integrally be enclosed the space of a sealing, guarantee leakproofness.
[Detailed description of the invention]
Fig. 1 is the schematic top plan view of loudspeaker provided in an embodiment of the present invention；
Fig. 2 is Section A-A partial schematic sectional view in Fig. 1；
Fig. 3 is the perspective view of the explosion of loudspeaker provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of top cover provided in an embodiment of the present invention；
Fig. 5 is the perspective view of the explosion of vibrational system provided in an embodiment of the present invention；
Fig. 6 is the perspective view of the explosion of magnetic circuit system provided in an embodiment of the present invention；
Fig. 7 is the connection schematic diagram of voice coil provided in an embodiment of the present invention and skeleton.
[specific embodiment]
The invention will be further described with embodiment with reference to the accompanying drawing.
It should be noted that in the embodiment of the present invention institute it is directional instruction (such as up, down, left, right, before and after, it is interior,
Outside, top, bottom ...) it is only used for explaining and be closed in the relative position under a certain particular pose (as shown in the picture) between each component
System etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, which can
Directly on the other element or may be simultaneously present centering elements.When an element referred to as " connects " another yuan
Part, it, which can be, is directly connected to another element or may be simultaneously present centering elements.
Please refer to Fig. 1-7, a kind of loudspeaker 100 provided in an embodiment of the present invention, including frame 10, be mounted in frame 10
Vibrational system 20 and be mounted in frame 10 for driving the magnetic circuit system 30 of 20 vibration sounding of vibrational system.
Frame 10 includes for accommodating the bottom frame 11 of magnetic circuit system 30 and the top cover 12 being fixed on magnetic circuit system 30, bottom frame
11 include bottom plate 111 and the first side plate 112 for being convexly equipped in 111 edge of bottom plate, and top cover 12 includes top plate 121, is convexly equipped in top plate side
Second side plate 122 of edge and the convex block 123 being convexly equipped among top plate 121, the side of the separate top plate 121 of convex block 123 and magnetic circuit
System 30 connects.Preferably, bottom plate 111 and top plate 121 are arranged in parallel, and the first side plate 112 is from the edge of bottom plate 111 towards top plate
121 places side extend, and the second side plate 122 extends from the edge of top plate 121 towards 111 place side of bottom plate.
Vibrational system 20 includes first annular vibrating diaphragm 21, the second annular diaphragm 22, annular top dome 23, voice coil 24 and skeleton
25, the outside of first annular vibrating diaphragm 21 is connect with bottom frame 11, is specifically connect with the first side plate 112, first annular vibrating diaphragm 21 it is interior
Side is connect with the outside of annular top dome 23, and the outside of the second annular diaphragm 22 is connect with the inside of annular top dome 23, the second annular
The inside of vibrating diaphragm 22 is connect with top cover 12, is specifically connect with the second side plate 122, and one end of skeleton 25 connect with voice coil 24, is another
End is connect with annular top dome 23.It include double vibrations of first annular vibrating diaphragm 21 and the second annular diaphragm 22 by setting vibrational system 20
Membrane structure can make the vibration of vibrational system 20 more balance, and effectively reduce because of the uneven noise generated of vibration, effectively mention
Sharp matter；In addition, by above-mentioned connection type, first annular vibrating diaphragm 21, the second annular diaphragm 22, annular top dome 23, bottom frame
11 and the whole space that can be enclosed a sealing of top cover 12, guarantee leakproofness.
First annular vibrating diaphragm 21 includes the first ring 211, the first fixed part 212 positioned at 211 inside of the first ring and position
The second fixed part 213 in 211 outside of the first ring, the first fixed part 212 are connect with the outside of annular top dome 23, and second is fixed
Portion 213 is connect with bottom frame 11, is specifically connect with the first side plate 112；Second annular diaphragm 22 includes the second ring 221, is located at the
The third fixed part 222 and the 4th fixed part 223 on the outside of the second ring 221 of two rings, 221 inside, third fixed part
222 connect with top cover 12, specifically connect with the second side plate 122, and the 4th fixed part 223 is connect with the inside of annular top dome 23.
First ring 211 is both ends respectively from the first fixed part 212 and the second fixed part 213 towards the direction far from bottom frame 11
The arcuate structure of bending protrusion setting；Second ring 221 is both ends respectively from 223 court of third fixed part 222 and the 4th fixed part
The arcuate structure of direction bending protrusion setting far from bottom frame 11.
Voice coil 24 is movable to be sheathed on outside convex block 123.
There are two skeleton 25 is set, two skeletons 25 extend from the two opposite sides of voice coil 24 respectively connects annular top dome 23.It is logical
Crossing two skeletons 25 of setting, extension is connected to annular top dome 23 from the two opposite sides of voice coil 24, and voice coil 24 can pass through two skeletons
Vibration is balancedly passed to annular top dome 23 by 25, so that vibrational system 20 vibrates equilibrium, promotes sound quality.It is to be appreciated that bone
There are two frame 25 is not limited to set, skeleton 25 is equipped with one, three, four and any other number is also possible, as long as
Voice coil 24 can drive first annular vibrating diaphragm 21 and the second annular diaphragm 22 to vibrate by skeleton 25.
The side of the second side plate of direction 122 of each skeleton 25 is recessed with the evacuation notch for avoiding the second side plate 122
26.The vibratility adjustment of voice coil 24 can effectively be increased by the way that the evacuation notch 26 is arranged, to promote the power of loudspeaker 100.
Each skeleton 25 includes the first extension 251, the second extension 252 and third extension 253, the first extension
251 are arranged at intervals at the side of voice coil 24, and the second extension 252 and third extension 253 are respectively from the two of the first extension 251
The lateral wall of the direction connection voice coil 24 of the direction of vibration along vertical voice coil 24 is held, the first extension 251 connects annular top dome 23,
Evacuation notch 26 is set to the second extension 252 and third extension 253.With the set-up mode, the first extension 251 and annular
Top dome 23 has biggish connection area, and the connection of skeleton 25 and annular top dome 23 is more firm, in this way, when voice coil 24 passes through bone
When frame 25 drives annular 23 high-frequency vibration of top dome or violent oscillatory motion, the junction of skeleton 25 and annular top dome 23 is not easy to send out
Raw fracture.
Magnetic circuit system 30 is located at the inside of the second annular diaphragm 122.By the way that magnetic circuit system 30 is arranged to be located at the second ring
The inside of shape vibrating diaphragm 122, vibrational system 20 will not be caused to hinder, can substantially be mentioned on the direction of vibration of voice coil 24 to voice coil 24
Effective oscillation space of high voice coil 24 promotes the power of loudspeaker 100, and is convenient for the optimization design of magnetic circuit system 30.
Magnetic circuit system 30 includes the main magnet steel for being installed on the magnetic conductive board 31 among bottom frame 111, being set among magnetic conductive board 31
32, four separate magnetic conductions for being set on magnetic conductive board 31 and surrounding the secondary magnet steel 33 of main magnet steel 32 setting, be attached at main magnet steel 32
The main pole core 34 of 31 side of plate and four are attached at the consequent pole core 35 far from 31 side of magnetic conductive board of four secondary magnet steel 33 respectively, main
Magnet steel 32 and the setting of the secondary interval of magnet steel 33, voice coil 24 is movable to be sheathed on outside main magnet steel 32.It is to be appreciated that secondary magnet steel 33 not office
There are four being limited to set, such as there are two secondary magnet steel 33 sets, two secondary magnet steel 33 are respectively arranged at the two opposite sides of main magnet steel 32
It is possible.
The centre of bottom plate 111 offers through-hole 113, and magnetic conductive board 31 is embedded in through-hole 113.Due to 100 size of loudspeaker
Limitation, the distance that bottom plate 111 arrives annular top dome 23 is limited, by opening up through-hole 113 on bottom plate 111, magnetic conductive board 31 is embedding
In through-hole 113, it can reduce magnetic conductive board 31 and occupy the distance that bottom plate 111 arrives annular top dome 23, so as to increase voice coil
24 effective oscillation space, improves the power of loudspeaker 100.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (10)
1. a kind of loudspeaker, magnetic circuit system including vibrational system, for driving the vibrational system vibration sounding and it is used for
The frame installed for the vibrational system and the magnetic circuit system, which is characterized in that the frame includes for accommodating the magnetic
The bottom frame of road system and the top cover being fixed on the magnetic circuit system, the vibrational system includes first annular vibrating diaphragm, the second ring
Shape vibrating diaphragm, annular top dome, voice coil and skeleton, the outside of the first annular vibrating diaphragm are connect with the bottom frame, first ring
The inside of shape vibrating diaphragm is connect with the outside of the annular top dome, and the outside of second annular diaphragm is interior with the annular top dome
Side connects, and is connected with the top cover on the inside of second annular diaphragm, one end of the skeleton connect with the voice coil, is another
End is connect with the annular top dome.
2. loudspeaker according to claim 1, which is characterized in that the magnetic circuit system is located at second annular diaphragm
Inside.
3. loudspeaker according to claim 2, which is characterized in that the magnetic circuit system includes being installed among the bottom frame
Magnetic conductive board, be set among the magnetic conductive board main magnet steel, four be set on the magnetic conductive board and around the main magnet steel
The secondary magnet steel of setting, be attached at the main magnet steel far from the magnetic conductive board side main pole core and four be attached at four respectively
The consequent pole core far from the magnetic conductive board side of the pair magnet steel, the main magnet steel and the secondary magnet steel interval setting, the sound
Enclose movable be sheathed on outside the main magnet steel.
4. loudspeaker according to claim 3, which is characterized in that the bottom frame includes bottom plate and is convexly equipped in the bottom plate side
First side plate of edge, the outside of the first annular vibrating diaphragm are connect with first side plate, and the centre of the bottom plate offers logical
Hole, the magnetic conductive board are embedded in the through-hole.
5. loudspeaker according to claim 1, which is characterized in that the top cover includes top plate, is convexly equipped in the top plate
Between convex block and be convexly equipped in the second side plate of the ceiling edge, the side far from the top plate of the convex block and the magnetic circuit
System connection, the inside of second annular diaphragm connect with second side plate, the voice coil is movable be sheathed on it is described convex
Outside block.
6. loudspeaker according to claim 5, which is characterized in that there are two the skeleton is set, two skeleton difference
Extend the connection annular top dome from the two opposite sides of the voice coil.
7. loudspeaker according to claim 6, which is characterized in that each skeleton towards the one of second side plate
Side is recessed with the evacuation notch for avoiding second side plate.
8. loudspeaker according to claim 7, which is characterized in that each skeleton includes the first extension, second
Extension and third extension, first extension are arranged at intervals at the side of the voice coil, second extension and institute
It states described in direction connection of the third extension respectively from the both ends of first extension along the direction of vibration of the vertical voice coil
The lateral wall of voice coil, the first extension connection annular top dome, the evacuation notch are set to second extension
With the third extension.
9. loudspeaker according to claim 1-8, which is characterized in that the first annular vibrating diaphragm includes the first folding
Ring, the first fixed part on the inside of first ring and the second fixed part on the outside of first ring, described
One fixed part is connect with the outside of the annular top dome, and second fixed part is connect with the bottom frame；The second annular vibration
Film includes that the second ring, the third fixed part on the inside of second ring and the on the outside of second ring the 4th are solid
Determine portion, the third fixed part is connected with the top cover, and the 4th fixed part is connect with the inside of the annular top dome.
10. loudspeaker according to claim 9, which is characterized in that first ring is both ends respectively from described first
The arcuate structure that fixed part and second fixed part are arranged towards the direction bending protrusion far from the bottom frame；Second ring
It is arranged respectively from the third fixed part and the 4th fixed part towards the direction bending protrusion far from the bottom frame for both ends
Arcuate structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387728 | 2019-05-10 | ||
| CN2019103877287 | 2019-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110099341A true CN110099341A (en) | 2019-08-06 |
| CN110099341B CN110099341B (en) | 2021-07-09 |
Family
ID=67450376
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910462108.5A Active CN110149579B (en) | 2019-05-10 | 2019-05-30 | Magnetic circuit system and loudspeaker using same |
| CN201910488209.XA Expired - Fee Related CN110166910B (en) | 2019-05-10 | 2019-06-05 | Loudspeaker |
| CN201910487407.4A Active CN110099341B (en) | 2019-05-10 | 2019-06-05 | Loudspeaker |
| CN201910487405.5A Active CN110149580B (en) | 2019-05-10 | 2019-06-05 | Loudspeaker |
| CN201911379696.2A Active CN111510827B (en) | 2019-05-10 | 2019-12-27 | Sound production device |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910462108.5A Active CN110149579B (en) | 2019-05-10 | 2019-05-30 | Magnetic circuit system and loudspeaker using same |
| CN201910488209.XA Expired - Fee Related CN110166910B (en) | 2019-05-10 | 2019-06-05 | Loudspeaker |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910487405.5A Active CN110149580B (en) | 2019-05-10 | 2019-06-05 | Loudspeaker |
| CN201911379696.2A Active CN111510827B (en) | 2019-05-10 | 2019-12-27 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (5) | CN110149579B (en) |
| WO (5) | WO2020227956A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228341A1 (en) * | 2019-05-10 | 2020-11-19 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
| CN112511958A (en) * | 2020-12-18 | 2021-03-16 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
| WO2021128330A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2021128048A1 (en) * | 2019-12-25 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2021134185A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2021134184A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Sound emission device |
| WO2022143051A1 (en) * | 2020-12-30 | 2022-07-07 | 歌尔股份有限公司 | Exciter and electronic product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405422B (en) * | 2019-11-21 | 2021-11-12 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2021128332A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN212034339U (en) * | 2020-05-20 | 2020-11-27 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
| CN212034341U (en) * | 2020-05-20 | 2020-11-27 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
| CN111901732B (en) * | 2020-06-24 | 2021-04-27 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN212486779U (en) * | 2020-06-30 | 2021-02-05 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN212785823U (en) * | 2020-07-06 | 2021-03-23 | 瑞声科技(新加坡)有限公司 | Sounding device |
| CN213462308U (en) * | 2020-07-06 | 2021-06-15 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN112165675B (en) * | 2020-10-22 | 2021-09-24 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker |
| CN116887145B (en) * | 2023-08-10 | 2024-01-26 | 汉得利（常州）电子股份有限公司 | Magnetic circuit structure and double-sided loudspeaker |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110149579B (en) | 2021-08-10 |
| CN111510827A (en) | 2020-08-07 |
| WO2020228341A1 (en) | 2020-11-19 |
| WO2020228079A1 (en) | 2020-11-19 |
| CN110099341B (en) | 2021-07-09 |
| WO2020228080A1 (en) | 2020-11-19 |
| CN110149580B (en) | 2021-02-12 |
| CN110149580A (en) | 2019-08-20 |
| WO2020228081A1 (en) | 2020-11-19 |
| CN110149579A (en) | 2019-08-20 |
| CN111510827B (en) | 2021-12-24 |
| CN110166910A (en) | 2019-08-23 |
| CN110166910B (en) | 2021-01-08 |
| WO2020227956A1 (en) | 2020-11-19 |
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